package com.xl.reggie.filter;

import com.alibaba.fastjson.JSON;
import com.xl.reggie.common.BaseContext;
import com.xl.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
@Slf4j
public class LoginCheckFilter implements Filter {
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();


    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        log.info("拦截到请求：{}",request.getRequestURI());
        String requestURI = request.getRequestURI();
        String[] urls = new String[] {
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/user/sendMsg",
                "/user/login"

        };
        if (check(urls,requestURI)) {
            log.info("不需要拦截：{}",requestURI);
            chain.doFilter(request,response);
            return;
        }
        if (request.getSession().getAttribute("employee")!=null) {
            log.info("已经登录过：{}",requestURI);
            Long empId = (Long) request.getSession().getAttribute("employee");
            BaseContext.setCurrentId(empId);
            chain.doFilter(request,response);
            return;
        }
        if (request.getSession().getAttribute("user")!=null) {
            log.info("已经登录过：{}",requestURI);
            Long empId = (Long) request.getSession().getAttribute("user");
            BaseContext.setCurrentId(empId);
            chain.doFilter(request,response);
            return;
        }
        log.info("不能放行:{}",requestURI);
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;
    }
    public boolean check(String[] urls,String requestURI) {
        for (String url : urls) {
            boolean match = PATH_MATCHER.match(url,requestURI);
            if (match) {
                return  true;
            }
        }
        return false;
    }

}
